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Asked: 2026-06-17T14:24:46+00:00

I am using Qt Designer 4.8.4 and I include two files in the QMainWindow

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I am using Qt Designer 4.8.4 and I include two files in the QMainWindow resource file: a .ico file and a .gif file. When loading from code using:

QPixmap p;
p.load(":/MyApp/media/logo.gif");  // does work
p.load(":/MyApp/media/logo.ico");  // does not work

The gif file works, but not the ico file. Is there any reason? I am using the ico file as the window icon and it is not showing when running the application.

And, YES, I am successfully compiling the qrc file since the GIF file is working.

Cheers,

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1 Answer

  1. Editorial Team

    *.ico is not supported.

    By default, Qt supports the following formats:

    Format Description Qt’s support

    BMP Windows Bitmap Read/write

    GIF Graphic Interchange Format (optional) Read

    JPG Joint Photographic Experts Group Read/write

    JPEG Joint Photographic Experts Group Read/write

    PNG Portable Network Graphics Read/write

    PBM Portable Bitmap Read

    PGM Portable Graymap Read

    PPM Portable Pixmap Read/write

    TIFF Tagged Image File Format Read/write

    XBM X11 Bitmap Read/write

    XPM X11 Pixmap Read/write

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